Question

1. a chemist is observing a solution’s temperature over a four-hour period that starts at -12.4°c. in the four hours, the temperature rises 5.7°c and drops 8.1°c. what is the temperature of the solution after four hours? 18. the volleyball club is raising money for a new net and equipment. they need $842.36 to make this purchase and have received a $300.00 donation. the remaining amount will be equally divided among 4 different fundraisers throughout the summer. how much money will each fundraiser need to raise in order to purchase the new net and equipment?

Explanation:

Problem 16

Step1: Iniciar con la temperatura inicial

La temperatura inicial es $-12.4^\circ\text{C}$.

Step2: Añadir el aumento de temperatura

La temperatura sube $5.7^\circ\text{C}$, así que sumamos: $-12.4 + 5.7 = -6.7^\circ\text{C}$.

Step3: Restar la caída de temperatura

Luego, la temperatura baja $8.1^\circ\text{C}$, así que restamos: $-6.7 - 8.1 = -14.8^\circ\text{C}$.

Step1: Calcular la cantidad restante

Necesitan $\$842.36$ y han recibido $\$300.00$, así que la cantidad restante es $842.36 - 300.00 = 542.36$ dólares.

Step2: Dividir la cantidad restante entre 4

Dividimos la cantidad restante entre 4 fundraisers: $\frac{542.36}{4} = 135.59$ dólares.

Answer:

La temperatura después de cuatro horas es $-14.8^\circ\text{C}$.

Problem 18